[#56982] [ruby-trunk - Bug #8854][Open] Update URL for bug reports — "stomar (Marcus Stollsteimer)" <redmine@...>
7 messages
2013/09/03
[#57038] [ruby-trunk - Feature #3620] Add Queue, SIzedQueue and ConditionVariable implementations in C in addition to ruby ones — "Glass_saga (Masaki Matsushita)" <glass.saga@...>
4 messages
2013/09/05
[#57040] Re: [ruby-trunk - Feature #3620] Add Queue, SIzedQueue and ConditionVariable implementations in C in addition to ruby ones
— SASADA Koichi <ko1@...>
2013/09/05
(2013/09/05 20:52), Glass_saga (Masaki Matsushita) wrote:
[#57058] [ruby-trunk - Bug #8875][Open] Select is not usable with SSLSocket — "headius (Charles Nutter)" <headius@...>
11 messages
2013/09/07
[#57092] [ruby-trunk - Bug #8883][Open] Rational canonicalization unexpectedly converts to Fixnum — "melquiades (Paul Cantrell)" <cantrell@...>
16 messages
2013/09/09
[#57111] [ruby-trunk - Feature #8887][Open] min(n), max(n), min_by(n), max_by(n) — "akr (Akira Tanaka)" <akr@...>
13 messages
2013/09/10
[#57117] [ruby-trunk - Feature #8890][Open] [PATCH] Eliminate less-than-zero checks for unsigned variables — "tonyo (Anton Ovchinnikov)" <revolver112@...>
5 messages
2013/09/10
[#57134] [CommonRuby - Feature #8896][Open] #tap with missing block — "prijutme4ty (Ilya Vorontsov)" <prijutme4ty@...>
5 messages
2013/09/11
[#57138] [ruby-trunk - Feature #8897][Open] client side TCP fast open — "Glass_saga (Masaki Matsushita)" <glass.saga@...>
5 messages
2013/09/11
[#57195] [ruby-trunk - Feature #8897][Assigned] client side TCP fast open
— "Glass_saga (Masaki Matsushita)" <glass.saga@...>
2013/09/14
[#57186] [ruby-trunk - Feature #8909][Open] Expand "f" frozen suffix to literal arrays and hashes — "headius (Charles Nutter)" <headius@...>
37 messages
2013/09/14
[#57224] [ruby-trunk - Feature #8909] Expand "f" frozen suffix to literal arrays and hashes
— "headius (Charles Nutter)" <headius@...>
2013/09/15
[#57262] [ruby-trunk - Feature #8921][Open] Allow select, reject, etc to accept a regex — "kyledecot (Kyle Decot)" <kyle.decot@...>
13 messages
2013/09/18
[#57264] [ruby-trunk - Feature #8921] Allow select, reject, etc to accept a regex
— "kyledecot (Kyle Decot)" <kyle.decot@...>
2013/09/18
[#57265] Re: [ruby-trunk - Feature #8921] Allow select, reject, etc to accept a regex
— Fuad Saud <fuadksd@...>
2013/09/18
Shouldn't select/reject use threequals?
[#57292] [ruby-trunk - Feature #8931][Open] Update URL in REPORTBUG_MSG — "zzak (Zachary Scott)" <e@...>
4 messages
2013/09/20
[#57315] [ruby-trunk - Feature #8938][Open] it keyword — "Sing9898 (Sing Lou)" <3b06e8d4@...>
5 messages
2013/09/23
[#57367] [ruby-trunk - Feature #8951][Open] Please add a hash-to-hash alternative of the map method to Hash — "behrangsa (Behrang Saeedzadeh)" <behrangsa@...>
8 messages
2013/09/25
[#57385] [ruby-trunk - Bug #8953][Open] `str =~ /pattern/` does not call =~ method if (1) str is a String, (2) /pattern/ is a Regexp literal — "gfx (Goro Fuji)" <gfuji@...>
12 messages
2013/09/26
[#57394] [ruby-trunk - Bug #8955][Open] LocalJumpError - no block given (yield) after implementation of class hierarchy method cache invalidation — "mfla (Morten Fla)" <mmflaa@...>
4 messages
2013/09/26
[#57462] [ruby-trunk - misc #8962][Open] [DOC] add step to enable Generational GC merits in README.EXT* — "tad (Tadashi Saito)" <redmine@...>
6 messages
2013/09/28
[ruby-core:57438] [ruby-trunk - Feature #6309] Add a reference queue for weak references
From:
"headius (Charles Nutter)" <headius@...>
Date:
2013-09-27 11:19:21 UTC
List:
ruby-core #57438
Issue #6309 has been updated by headius (Charles Nutter). I again request approval from matz to add this feature :-) Can we do it for 2.1, please? ---------------------------------------- Feature #6309: Add a reference queue for weak references https://bugs.ruby-lang.org/issues/6309#change-42044 Author: headius (Charles Nutter) Status: Assigned Priority: Normal Assignee: matz (Yukihiro Matsumoto) Category: Target version: next minor Most interesting uses of WeakRef are much harder to do efficiently without a reference queue. A reference queue, as implemented by the JVM, is basically a queue into which weak references are placed some time after the object they refer to has been collected. The queue can be polled cheaply to look for collected references. A simple example of usage can be seen in the weakling gem, with an efficient implementation of an ID hash: https://github.com/headius/weakling/blob/master/lib/weakling/collections.rb Notice the _cleanup method is called for every operation, to keep the hash clear of dead references. Failure to have a _cleanup method would mean the hash grows without bounds. _cleanup cannot be implemented efficiently on MRI at present because there's no reference queue implementation. On MRI, _cleanup would have to perform a linear scan of all stored values periodically to search for dead references. For a heavily used hash with many live values, this becomes a very expensive operation. It's probably possible to implement reference queues efficiently atop the new ObjectSpace::WeakMap internals, since it already keeps track of weak references and can run code when a weak reference no longer refers to a live object. -- http://bugs.ruby-lang.org/